1 Choose the best sentence for the situation.
1 A I'm in the bathroom! I wash my hair.
B I'm in the bathroom! I'm washing my hair.
2 A This maths problem is difficult. Do you know the answer? J
B This maths problem is difficult. Are you knowing the answer?
3 A Do you wait for the school bus? You're in the wrong place!
B Are you waiting for the school bus? You're in the wrong place!
4. A Look at that bike! It costs £350.
B Look at that bike! It is costing £350.
5 A Do you understand this exercise?
B Are you understanding this exercise?
6 A Sorry, I'm busy. I do my
homework.
B Sorry, I'm busy. I'm doing my homework.